Question

A table cover is made to cover a round dinning table.the diametre of the table cover is 3.5m.what is the area of the table cover?Also find cost of the cloth at the rate of Rs.80 per square metre​

Answer 1

First of all find the radius that's divide it by 2

3.5/ 2 = 1.75

Now apply the formula of Surface area of a circle that is πr2 ( here 2 is sq )

Now do the calculations...

22/7 × 1.75 × 1.75

67.375/ 7 = 9.625 m2

Now the cost

So multiply 9.635 by 80

It's 770 rupees

Hope it helps u ☺️